Question

Expand (3a + 4) (3a + 5) using suitable identity​

Answer 1

Answer:

$(3A +4B +5)² \\ </p><p></p><p>3A²+4B²+5²+2×3A×4B+2×4B×5+2×5×3A \\ </p><p></p><p>9A²+16B²+25+24AB+40B+30A \\ </p><p></p><p>BY \:  USING  \: IDENTITY : \\ </p><p></p><p>(A+B+C)²= A²+B²+C²+2AB+2BC+2CA</p><p></p><p>$

Good evening...

I hope this might help you with ☺

Answer 2

Identity ( x + a ) ( x + b ) = x^ + (a+b)x +a x b